Lawn-sprinkler.



L. R, NELSON.

, LAWN SPRINKLBR. Y APPLIUATION HLED Now/21o. 190B.

PatentedOct. 31, 1911.

2 sums-SHEET 1.

I L. R'. NELSON.'

LAWN SPRINKLER.

AAPPLNMIVON FILED Nov.1o,19o8.

Patented Oct. 31, 1911.

2 SHEETS-SHEET 2.

holes or perforations.

'resists pressure or LEWEN R. NELSON, OF PEORIA, ILLINOIS, ASSIGNOR OF ONE-HALF TO CENTRAL BRASS & STAMPING C0., A CORPORATION 0F ILLINOIS.

. LAWNfsPRINKLER..

Specification of Letters Patent.

Patented Oct. 31,' 1911.

Application filed November 10, 1908. Serial No. 461,915.

To allee/0m t may concern.'

Beit known that I, LnwnN R. NELSON, citizen of the United States, residing at Pe- Oria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Lawn-Sprinklers; and Ido hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a lawn sprinkler and pertains more particularly to one that-will sprinkle an area having one or more straight sides and one by t-he use of which the ground may be sprinkled up to the foundation of a building, for instance, or the straight edge of a sidewalk, without wetting them. It is desirable that foundation walls and side-walks be kept dry for obvious reasons, and to the end that this may be done while properly and thoroughly sprinkling the grass adjacent thereto I have constructed the device shown in the'drawings attached hereto, wherein,

Figure l is a plan of the sprinkler. Fig. 2 is a Vertical section of the saine on line .fr- 00, Fig. l. Fig. 3 is a plan of the device showing a slightly diii'erent arrangement of Fig. 4 is a vertical section of a portion of the forni shown in Fig. 3. Fig. 5 illustrates the under side of the sprinkler showing the manner of strengthening it.

The device consists `of a. preferably circular bot-toni A snrinonnted by a` body B comprising the sidesl (l and l), having a centrally convex portion and an annular externally concave portion near said sides C as clearly shown inFig. 2. A i'lange E is provided at the lower edge of the bodvvv and the edge F on the. bottoni is turned over upon it to make a lrin water-iight joint. ldecured at one side of the body is a tubular threaded portion to which the hose'is attached and the bottoni A iseorrugated at in any .forni desired that will best strengthen it. The body as vformed is very strong since by reason of its combined concave and convex surfaces of agee .torni it blows that. might tend to dent it and the forni of the bottoni and body arc'also particularly adapted to withstand internal pressure. which is often very great. As an additional strengthening medium both for external and internal pressure I erect Within the body a post H" which is suitably secured to the bottom A and to the body at its apex so that the pressure of water which is often as high as 80 to 90 pounds to the inchwill not rupture said body; the method of attaching the post to the dome and the bottom being such as to prevent the separation of these parts in opposite directions.

The arrangement orposition of' the-main series of holes or perforations in the sprinkler is peculiar in that said perforations are made in each quadrant of the concave portion of the body; the disposition of said perforations with reference to the surface being such that the streams or Ajets discharged therefrom will fall side by side to forma substantially straight line 'at' the outer edge of the area to be sprinkled. To make this clear, I have shown in broken lines in Fig. l ,the direction of travel of two corresponding series'of streams or jets and where they fall. In the lower portion of the curve where the surface becomes nearly horizontal is a hole or perforation indilcated by a, while higher up upon the curve,

and about one-'eighth of t-he distance around the body, is a perforation l). The dotted. lines indicated by a and 7J in Fig. 2 indicate the forms of streams projected from the holes and the points at which they fall, these said points Fig. 1. The stream b is projected to a considerable distance and meets the ground at the intersection of the two meeting sides of the sprinkled area, while the stream 0, falls closer to the hole from -which it proceeds. distances thrown is that the streams a. and 7) are thrown outward at very diilercnt angles, Upon the surface intermediate the holes (L and Z) is disposed a. series of holes or -perfor-ations in such a position 'relative to the curve of said surface that the streams being on the lines Y Y The reason for the differencein the i projected therefrom fall upon the ground in substantially a straight line between the points at which the streams or jets a 4and Z1 fall` or, in other words, in passing'from the hole n, each succeeding .hole will -be a little 'higher up on the curve and will therefor throw a stream more-nearly in a horizontal direction than the one before it.

9. A circular sprinkling chamber of dome-like form provided with an inlet for f Water and having in its upper part an annular externally concave Zone providedwith a seriesof perr'orations correspondingly arranged in each quadrant, the vperforationsof each'series varying in dist-ance from the vertical axis of the chamber said upper part being further provided with perforations at other points substantially as set forth.

10. A sprinkler having a flat corrugated bottom and a, top consisting o-an externally convex central portion surrounded by an externally concave portion. having its outer margin connected to lthe bottom by approximately vertical Walls, said centralportion being connected to the bottom by a post, and

said concave portion being provided witli a series of perforations', in each' quadrant, at progressively increasingdistances from the 'connecting them,

axis of the chamber, substantially as set forth. y y

11. A lawn sprinkler consisting of a bottom of ductile metal, a perforated dome-like body also of ductile metal, both having interlocking portions rigidly and permanently and a post of a single part erected Within the sprinkler and rigidly and permanently connected substantially centrally to b oth said bottom and to the top of the body and rigidly connecting them, the Whole forming a unit, said body having an inlet for Water under pressure.

In testimony whereof I 'alx my signature, in presence of tWo Witnesses.

LEWEN NELSON.

Witnesses:

E. J. ABnRsoL, H.IA. SMITH. 

